Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
  • A61K8/11—Encapsulated compositions
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q1/00—Make-up preparations; Body powders; Preparations for removing make-up
  • A61Q1/02—Preparations containing skin colorants, e.g. pigments
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q1/00—Make-up preparations; Body powders; Preparations for removing make-up
  • A61Q1/02—Preparations containing skin colorants, e.g. pigments
  • A61Q1/10—Preparations containing skin colorants, e.g. pigments for eyes, e.g. eyeliner, mascara
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
  • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
  • C09C1/0015—Pigments exhibiting interference colours, e.g. transparent platelets of appropriate thinness or flaky substrates, e.g. mica, bearing appropriate thin transparent coatings
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
  • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
  • C09D5/36—Pearl essence, e.g. coatings containing platelet-like pigments for pearl lustre
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
  • A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
  • A61K2800/41—Particular ingredients further characterized by their size
  • A61K2800/412—Microsized, i.e. having sizes between 0.1 and 100 microns
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
  • A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
  • A61K2800/42—Colour properties
  • A61K2800/43—Pigments; Dyes
  • A61K2800/436—Interference pigments, e.g. Iridescent, Pearlescent
• • C—CHEMISTRY; METALLURGY
  • C01—INORGANIC CHEMISTRY
  • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
  • C01P2006/00—Physical properties of inorganic compounds
  • C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
  • C01P2006/62—L* (lightness axis)
• • C—CHEMISTRY; METALLURGY
  • C01—INORGANIC CHEMISTRY
  • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
  • C01P2006/00—Physical properties of inorganic compounds
  • C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
  • C01P2006/66—Hue (H*)
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
  • C09C2200/00—Compositional and structural details of pigments exhibiting interference colours
  • C09C2200/10—Interference pigments characterized by the core material
  • C09C2200/102—Interference pigments characterized by the core material the core consisting of glass or silicate material like mica or clays, e.g. kaolin
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
  • C09C2220/00—Methods of preparing the interference pigments
  • C09C2220/10—Wet methods, e.g. co-precipitation
  • C09C2220/106—Wet methods, e.g. co-precipitation comprising only a drying or calcination step of the finally coated pigment
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10S525/00—Synthetic resins or natural rubbers -- part of the class 520 series
  • Y10S525/902—Core-shell
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10S525/00—Synthetic resins or natural rubbers -- part of the class 520 series
  • Y10S525/934—Powdered coating composition

Definitions

• the present invention relates to composite powder prepared by coating a ramentaceuos substrate such as mica with two or more types of coloring layers. Moreover the present invention relates to cosmetic and paint with the composite powder blended therein.
• ramentaceuos substrates such as mica, talc, and sericite have been blended in cosmetics such as powder foundation or as pearl pigment in various types of paint such as paint for cars.
• the effect obtained when the ramentaceous powder is blended in cosmetic includes , but not limited to, improvement in the adaptability of the cosmetic to be spread on human skin, improvement of the color pigment of the dispersibility on human skin, and further improvement in the adhesiveness to human skin, and these characteristics are indispensable for make-up cosmetics.
• mica covered with a titanium oxide layer having the certain thickness is called pearl pigment and is used in cosmetic and paint.
• This pearl pigment varies its color tone at a certain reflection angle against an incidence angle of light according to the thickness of the layer because of optical interference, and has intense luster. The more intense the luster, the more the brightness changes according to a viewing angle, and the characteristics is called flip-flop characteristic.
• Colors generated because of the optical interference have the higher brightness as compared to those of general color pigments such as iron oxide red and ultramarine blue, but the tinting strength is very weak.
• As a method of improving the tinting strength there has been proposed to cover the titanium oxide layer described above with a metal oxide which absorbs visible light having a wavelength in a certain range such as iron oxide (Refer to Japanese Patent Publication No. 7674/1983). With this method, however, although some particular colors are emphasized and the change in brightness caused by the luster can be made larger, but the effect that the color hue largely changes according to a viewing angle is rather weak.
• Japanese Patent Laid-Open Publication No. 101377/1989 proposes an invention relating to golden color luster pigment which is color and luster pigment containing mica or mica with metal oxide deposited thereon as a substrate and a metal oxide layer containing both titanium and iron coating the substrate, and also in which the metal oxide layer contains pseudo-blockite as an essential component.
• the metal oxide layer containing, in addition to titanium and iron, pseudo-blockite as an essential component is used for coating the substrate to improve the stability against heat and chemical compounds, and the metal layer is not used for changing the color tone according to a viewing angle.
• Japanese Patent laid-Open Publication No. 209024/1996 proposes luster pigment in which a flake-like substrate is sequentially coated with an achoromatic layer having the refractive index of 1.8 or below, a coating layer having the refractive index of 2.0 or more with selective absorbance, and an achromatic or selectively absorptive layer, if necessary, in this order, and there are enlisted aluminum and alloy thereof as the metal substrate; silica, aluminum oxide, and others as the material with the refractive index of 1.8 or below used to form the first layer; and iron oxide, chromium oxide, and titanium oxide (TiO 2 reduced with ammonia) as the material having the refractive index of 2.0 or more with selective absorbance.
• the effect that the tone changes according to a viewing angle is pointed out, but in this luster pigment the metal substrate is used to intensify the tone change, and it is described in the publication that the pigment has intense metallic luster. Therefore, with the pigment, it is difficult to obtain cosmetics or paints having modest luster and natural appearance, and its concealing capability is disadvantageously too high.
• An object of the present invention is to provide composite powder with the color tone changing according to a viewing angle and insuring natural appearance without excessive luster.
• Another object of the present invention is to provide cosmetics and paints capable of emphasizing a face or other solid structures not with change in the brightness, but with change in the hue.
• the present invention provides composite powder prepared by coating a ramentaceous substrate with at least two color layers characterized in that a difference between the maximum value and the minimum value of the ab hue angle h ab (h MAX - h MIN ) as defined in the recommendation on uniform color spaces by CIE (Commission Internationale De L'eclairage) is in the range from 10° to 180° ( when this value exceeds 180°, the value of 360° - (h MAX - h MIN ) is in the range from 10° to 180°), and also that a ratio of the maximum value and the minimum value of the brightness L* as defined in the recommendation is in the range from 1.0 to 2.0.
• CIE Commission Internationale De L'eclairage
• a surface of the composite powder with a reflection and dispersion layer with the refractive index of 1.3 to 1.8 and also having some irregularity on the surface.
• Cosmetics and paints according to the present invention have any of the composite powders described above blended therein.
• a ramentaceous substrate is used for the composite powder according to the present invention.
• the ramentaceous substrate includes, but not limited to, natural minerals such as mica, talc, and sericite; and inorganic oxides such as synthetic mica, synthetic sericite, plate-like silica, plate-like aluminum oxide, and plate-like titanium oxide.
• An average particle diameter of the ramentaceous substrate is preferably in the range from about 1 to about 100 ⁇ m, and more preferably in the range from 5 to 30 ⁇ m.
• an average particle diameter of the ramentaceous substrate is less than 1 ⁇ m, an average particle diameter of the obtained composite powder is less than 1 ⁇ m, and in that case, change of hue hardly occurs, and on the contrary, when the average particle diameter of the ramentaceous substrate specific information more than 100 ⁇ m, also the average diameter of obtained composite powder exceeds 100 ⁇ m, and the luster is so intense that the appearance is unpleasant.
• the average particle diameter of a ramentaceous substrate as defined herein indicates an average value of the ramentaceous flat surfaces, which is obtained by 100 pieces of ramentaceous substrates with a scan type of electronic microscope for their maximum lengths and calculating the average value. Thickness of the ramentaceous substrate is preferably in the range from 0.05 to 1 ⁇ m.
• color layer used for coating the substrate known inorganic pigments, organic pigments, inorganic and organic composite pigments may be used, and in addition, coloring matters or a color layer colored with any coloring matter may be used.
• inorganic pigments such as ferric oxide ( ⁇ - Fe 2 O 3 , ⁇ -Fe 2 O 3 ), oxi-iron hydroxide (FeO (OH)), ferric hydroxide (Fe 2 (OH) 6 ), ferrous oxide (FeO), triiron tetraoxide (Fe 3 O 4 ), titanium oxide containing iron oxide, carbon black, ultramarine blue, iron blue, titaniumblack, chromium hydroxide, lithium cobalt titanate, manganese violet; organic coloring materials including various types of tar coloring matters, natural coloring matters, and other synthetic coloring matters; and inorganic or organic material layers colored or stained with these inorganic or organic pigments can be enlisted .
• thickness of each color layer is preferably in the range from 5 to 200 nm.
• the thickness is less than 5 nm, the tinting power is not sufficient, and on the other hand, when the thickness is more than 200 nm, the feeling in touching is apt to become lower.
• the first color layer is preferably in the range from 1 to 100 weight portions against 100 weight portions of the ramentaceous substrate, and more preferably in the range from 5 to 40 weight portions.
• the tinting power is insufficient, and if the quantity is over 100 weight portions, the adhesion to human skin and the feeling are apt to become lower when used as a component for cosmetics.
• the second and subsequent layers are preferably in the range from 1 to 40 weight portions against the 100 weight portions of a ramentaceous substrate with the first color layer or with the first color layer and the transmission light dispersion layer formed thereon described below in the state where other color layer(s) and the transmission light dispersion layer are formed just before formation of the second and subsequent color layer.
• the quantity of the second and subsequent layers is less than 1 weight portion, the tinting power is insufficient, and on the other hand, when the quantity is over 40 weight portions, the hiding capability is so strong that colors of underlying layers becomes invisible.
• h ab a difference between the maximum value and the minimum value of the ab hue angle h ab (h MAX - h MIN ) as defined in the recommendation on uniform color spaces by CIE (Commission Internationale De L'eclairage) is in the range from 10° to 180°.
• CIE Commission Internationale De L'eclairage
• the reason the value of (h MAX - h MIN ) or 360° - (h MAX - h MIN ) is limited to the above-described range is, when the value is outside the range, the cubic structure can not be emphasized by change in the hue, and a preferable range is decided according to an application of the composite powder. For instance, when used as a component for foundation which is cosmetic, the range from red to blue is preferable, so that the value of (h MAX - h MIN ) or 360° - (h MAX - h MIN ) is in the range from 10° to 100°, and when used as a component of paint, the value is set in the range from 10° to 180°.
• the difference between the maximum value and the minimum value of h ab is described more specifically below.
• the first color layer is formed with red ferric oxide
• the second color layer is formed thereon with yellow titanium oxide containing iron oxide
• yellow becomes stronger around the regular reflection angle
• red brown becomes stronger at farther points from the regular reflection angle.
• a ratio of the maximum value vs the minimum value of the brightness L* defined in the Recommendation on Uniform Color Spaces by CIE is required to be in the range from 1.0 to 2.0.
• the brightness L* is a scale for luster of the composite powder, and when the ratio of the maximum value vs the minimum value of the brightness L* is over 2.0, the luster is so intense that the natural appearance is lost.
• the ab hue angle h ab and brightness L* are measured using the composite powder spread on adhesive surfaces of a highly smooth transparent double-faced tape adhered onto a white paper piece as a sample and the three-dimensional declination spectrometer (produced by Murakami Shikisai-Gijutsu Kenkyusho, GCMS-4 (based on the double beam system; light source: D65; and view angle: 10°)), and also by setting the incidence angle at 45° and changing the receiving angle from - 80° to 80° at the measurement interval of 5°.
• assessment was made by calculating the difference (h MAX - h MIN ) between the maximum value h MAX and the minimum value h MIN of h ab .
• the assessment was made by calculating the ratio L* MAX /L* MIN between the maximum value L* MAX and the minimum value L* MIN of the brightness L*.
• the difference (h MAX - h MIN ) between the maximum value h MAX and the minimum value h MIN of h ab is larger, the color changes substantially according to the viewing angle, and as the ratio L* MAX /L* MIN is smaller, the luster is lower.
• the composite powder according to the present invention should preferably have at least one transmission light dispersion layer with the refractive index in the range from 1.3 to 1.8 between the color layers.
• This transmission light dispersion layer disperses the light which has passed through the second color layer (upper layer) and comes into the transmission light dispersion layer, and also disperses the light which is reflected on the first color layer and comes again into the transmission light dispersion layer, so that it provides the effect intensifying the contrast between the color of the second color layer at angular positions near the regular reflection angle and the color of the first color layer at angular positions farther from the regular reflection angle.
• the color of the second color layer at angular positions near the regular reflection angle and the color of the first color layer at angular positions farther from the regular reflection angle are mixed with each other, so that it is hard to obtain sharp contrast.
• the thickness of the transmission light dispersion layer is preferably in the range from 10 to 50 nm.
• the thickness of the transmission light dispersion layer is less than 10 nm, dispersion of light, when passing through the layer, is insufficient, and change of the hue becomes smaller, and on the contrary when the thickness is over 50 nm, feeling in touch of the cosmetics with this composite powder blended therein may become lower.
• the quantity of the transmission light dispersion layer is preferably in the range from 1 to 40 weight portions against 100 weight portions of the ramentaceous substrate.
• the transmission light dispersion layer is made from an inorganic oxide such as silica, or aluminum oxide, inorganic compounds such as magnesium fluoride, and organic resins such as polyamide, acryl, and polyurethane.
• inorganic oxide such as silica, or aluminum oxide
• inorganic compounds such as magnesium fluoride
• organic resins such as polyamide, acryl, and polyurethane.
• the composite powder according to the present invention should preferably have a reflective dispersion layer formed on the color layer which is the outermost layer and having the refractive index of 1.3 to 1.8 with fine irregularities on the surface.
• This reflective dispersion layer promote dispersion of light with the irregularities on the surface thereof, and at the same time suppresses reflection of light on a surface of the particle, thus the effect of lowering the luster being provided.
• the refractive index of the reflective dispersion layer exceeds 1.8, change of the hue is apt to become smaller.
• the refractive index is less than 1.3, dispersion is insufficient, and the effect of lowering the luster may be insufficient.
• Thickness of the reflective dispersion layer is preferably in the range from 10 to 100 nm.
• the thickness is less than 10, dispersion of light is insufficient, and the effect of lowering the luster is apt to be insufficient, and on the contrary when the thickness is over 100 nm, the feeling in touch of the cosmetics with the composite powder blended therein becomes poorer, and also change of the hue is apt to become smaller.
• a quantity of the light dispersion layer is preferably in the range from 3 to 20 weight portions against 100 weight portions of the composite powder before the light dispersion layer is formed thereon (namely, the ramentaceous substrate with the color layer, or the color layer and a reflective dispersion layer formed thereon).
• the quantity of the light reflection layer is less than 3 weight portions, dispersion of light is insufficient, and suppression of the luster may be insufficient, and on the contrary, when the quantity of the light dispersion layer is more than 20 weight portions, the feeling in touch of the cosmetics with the composite powder blended therein becomes poorer, and also change of the hue is apt to become smaller.
• the light dispersion layer is made from an inorganic oxide such as silica or aluminum oxide, an inorganic compound such as magnesium fluoride, or organic resin such as polyamide, acryl, or polyurethane.
• Silica is especially preferable because it has a lower refractive index, and is adapted to coating.
• An average particle diameter of the composite powder according to the present invention is in the range from 1 to 100 ⁇ m, and preferably in the range from 5 to 30 ⁇ m.
• the composite powder has a ramentaceous form like the substrate, and the average particle diameter is defined herein as the maximum length of a plane the ramentaceous plane, and is calculated by measuring 100 composite powder pieces with a scanning electron microscope and calculating an average of the maximum lengths of the ramentaceous planes of the particles.
• the average particle diameter of the composite powder particles is less than 1 ⁇ m, the feeling in touch may be poor, and on the other hand, when the average particle diameter is over 100 ⁇ m, the luster is so intense that the natural appearance is lost.
• the composite powder according to the present invention is blended in cosmetics, if the average particle diameter is in the range from 5 to 30 ⁇ m, cosmetics with excellent extendability on human skin and good feeling in touch can be obtained.
• the thickness of the composite powder should preferably be in the range from 0.05 to 1 ⁇ m.
• any known coating method may be employed.
• a metallic salt, an inorganic metal compound, and a partially hydrolyzed material thereof as a precursor of a color layer is added by a specified quantity to a dispersion of a ramentaceous substrate (the solvent is water and/or an organic solvent), hydrolysis or condensation/polymerization is performed under the existence of a catalyst for hydrolysis, if necessary, and the hydrolyte or condensed/polymerized material is deposited on the substrate.
• a ramentaceous substrate the solvent is water and/or an organic solvent
• a ramentaceous substrate is dispersed in a dispersion of a metallic salt, a solution of an organic metallic compound, or a partially hydrolyzed material thereof each as a precursor of a color layer, the resultant dispersion is hydrolyzed or further condensed/polymerized under the existence of a catalyst for hydrolysis, if necessary, and the hydrolyte or condensed/polymerized material is deposited on the substrate.
• organic resin such as polyamide or acryl
• organic resin layer is colored with various types of pigments or dyes (coloring matters)
• organic resin (monomer or oligomer) is polymerized with a ramentaceous substrate under the existence of pigments or paints is employable.
• the second and subsequent layers can be formed with the same method of forming the first color layer excluding the point that the ramentaceous substrate with the first color layer or the first color layer and the reflective dispersion layer formed thereon are used.
• a known film forming method may be used to form the transmission light dispersion layer.
• the transmission light dispersion layer is an inorganic oxide
• a metal salt or an organic metallic compound or a partially hydrolyzed material thereof each as a precursor material of an inorganic oxide is added by a specified quantity, and then the added material is hydrolyzed or condensed/polymerized under the existence of a catalyst for hydrolysis, if necessary, and deposited on the substrate to form the transmission light dispersion layer.
• the transmission light dispersion layer is an inorganic compound salt (such as magnesium fluoride)
• an inorganic compound salt such as magnesium fluoride
• a method in which powder of the inorganic compound salt is deposited on a substrate by making use of the static electricity and then the deposited matter is heated, or a mechano-chemical method may be employed.
• the transmission light dispersion layer is organic resin
• organic resin monomer, oligomer
• the reflective dispersion layer can be formed in the same way as that for forming the transmission light dispersion layer.
• the composite powder according to the present invention is blended together with various types of cosmetic components.
• a blending rate of the composite power is preferably in the range from 1 to 90 weight percent.
• the rate is less than 1 weight percent, the effect of providing natural appearance to a target body to be colored is hardly obtained. Namely, with the cosmetics according to the present invention, the hue changes according to a viewing angle, so that a three-dimensional effect can be given to a face or other solid portions of a human body irrespective of change in the brightness.
• the blending rate is over 90 weight percent, the tinting power or oily feeling originally required to cosmetics may be lost.
• the cosmetic components include, but not limited to, alcohols such as higher fatty alcohols, higher fatty acids, various types including ester oil, paraffin oil, and wax, ethylalcohol, propylene glycol, sorbitol, and glycerin; moisturizing agents such as muco-polysaccharides, collagens, PCA salt, lactates; various types of nonionic, cationic, anionic, or amphoteric surface surfactants; thickeners such as gum arabic, xanthane gum, polyvinyl pyrrolidone, ethylcellulose, carboxyl methylcellulose, carboxyvinyl polymer, denatured or not-denatured clay minerals; solvents such as ethyl acetate, acetone, and toluene; inorganic pigments/dyes; organic pigments/paints; antioxidants such as BHT, tocopherol; water; chemical agents; ultraviolet ray absorber; pH buffer; chelating agents; antis
• the surface of the powder may be processed with, for instance, silicone or a fluorine compound.
• the cosmetics according to the present invention can be manufactured by a known method, and is used in various forms including powder, cake-like, stick-like, pencil-like, liquid-phase, or cream-like forms, and more specifically the cosmetics includes foundation, cream, emulsion, eye-shadow, make-up base, nail enamel, eye liner, mascara, lip stick, pack, and cosmetics for hair.
• the composite power according to the present invention is blended in the paints according to the present invention together with various types of paint components and various types of solvent components.
• the blending rate of the composite powder is preferably in the range from 0.5 to 50 weight percent against the component for formation of paint film.
• the blending rate is less than 0.5 weight percent, the natural appearance of the paint film is hardly obtained like in the case of the cosmetics, and on the other hand, when the blending rate is over than 50 weight percent, strength of the paint film may become lower and also flatness of the surface may easily be lost.
• the components for formation of the paint film includes, but not limited to, organic resin components such as acryl, vinyl chloride, polyurethane, nitrocellulose, and polyester, and inorganic components of metallic alkoxides such as organic titanate, and organic silicate. Further additives such as thickners, ultraviolet absorbers, and stabilizers, and various types of coloring matters may be used.
• organic resin components such as acryl, vinyl chloride, polyurethane, nitrocellulose, and polyester
• inorganic components of metallic alkoxides such as organic titanate, and organic silicate.
• Further additives such as thickners, ultraviolet absorbers, and stabilizers, and various types of coloring matters may be used.
• solvent components of the paints such materials as dimethylformamide, methylethylketone, and toluene may be used on the condition that the materials dissolve the components for formation of paint film.
• the composite was filtered and washed, and then dried for 15 hours under the temperature of 100°C and then sintered for one hour under the temperature of 800° C and was pulverized. Then 100 g of the pulverized sample was added to 1 liter of demineralized water and the suspension was suspended. Then the suspension was heated to 80° C with the pH adjusted to 9.0, and then 100 g sodium silicate aqueous solution corresponding to 10 weight percent SiO 2 was added to the suspension over about 5 hours maintaining the pH at 9.0 with aqueous solution of hydrochloric acid. After addition of the sodium silicate solution was over, the resultant suspension was left for 1 hour as it was, and filtered.
• the filtrate was washed and dried for 15 hours under the temperature of 100° C to obtain inorganic composite powder in which mica was coated with ferric oxide and silica.
• 100 g of the sample was added to 1 liter of demineralized water, the suspension was fully agitated, and then a mixture of 171 g of titanil sulfate aqueous solution corresponding to 10 weight percent TiO 2 and 9 g of ferric oxide aqueous solution corresponding to 10 weight percent Fe 2 O 3 was added to the suspension at the rate of 16 g/hour maintaining the pH at 4.0 with 5% sodium hydroxide aqueous solution.
• 100 g of the inorganic composite power obtained in the embodiment 2 was added to a mixture of 100 g of 20 weight percent silica organosol dispersed 0.08 ⁇ m spherical silica in monoethylene glycol as a dispersion medium and 220 g of isopropanol, and 500 g ethanol was added to the resultant mixture solution agitating it under the room temperature adjusting the pH at 9.5 adding 28% ammonia water to have silica particles deposited on the inorganic composite particles.
• the composite powder was filtered, arid the filtrate was dried for 20 hours under the temperature of 150° C and then pulverized.
• talc 100g of talc with an average particle diameter of 10 ⁇ m was added to 1 liter of demineralized water, and the suspension was fully agitated and then heated to 80°C with the pH adjusted to 4.5.
• the mixed solution was left as it was for 1 hour, and filtered, and then the filtrate was washed and dried for 15 hours under the temperature of 100 °C , and then sintered for 1 hour under the temperature of 850 °C and pulverized to obtain talc coated with blue aluminum oxide and cobalt oxide.
• 100 g of the talc was added to 1 liter of demineralized water and the suspension was agitated. This suspension was heated to 80 °C and the pH was adjusted to 9.0, and then 100 g sodium silicate corresponding to 10 weight percent SiO 2 was added to the suspension over about 5 hours maintaining the pH at 9.0 with a hydrochloric acid solution.
• the suspension was left for 1 hour as it was, and then cooled to the room temperature, and filtered. Then the filtrate was washed and dried over 15 hours under the temperature of 100 °C to obtain inorganic composite powder coated with aluminum oxide, cobalt oxide, and silica.
• 100 g of the inorganic composite powder was added to and mixed in 1 liter of demineralized water, and the mixed solution was heated to 70 °C to adjust pH 3.0 with 5% hydrochloric acid aqueous solution, and then 208 g of chromium solution corresponding to 10 weight percent chromium oxide was added over about 5 hours to the solution maintaining the pH with 10 weight % ammonia water.
• the inorganic composite powder obtained in the embodiment 4 (talc coated with aluminum oxide, cobalt oxide, and silica) was added to and mixed in 1 liter of demineralized water, and a mixture of 171 g titanil sulfate aqueous solution corresponding to 10 weight percent TiO 2 and 9 g of ferric chloride aqueous solution corresponding to 10 weight percent Fe 2 O 3 was added at the rate of 16 g/hour to the suspension maintaining the pH at 4.0 with 5% sodium hydroxide aqueous solution. After addition of the mixture was over, the suspension was left as it was for one hour, and then cooled to the room temperature and filtered.
• a polyurethane resin layer of mica coated with 20% polyurethane resin and having an average particle diameter of 15 ⁇ m was stained with Green No. 201 (alizanin cyanine green F) to obtain mica coated with bluish green polyurethane resin.
• Green No. 201 alizanin cyanine green F
• 68 g of this polyurethane-coated mica and 7 g of PMMA with an average particle diameter of 0.2 ⁇ m were previously mixed with each other, and at first the PMMA layer was coated using a mechano-fusion system (manufactured by Hosokawa Micron, AM-15F) .
• the rotating speed of the rotor in this step was 1200 rpm.
• a mixture of components (1) to (7) is prepared. Then the components (8) to (14) were heated to 70° C and fully mixed with each other, and the resultant mixture was mixed with the above-described mixture and mixed to a homogeneous state. The resultant mixture was pulverized to obtain homogeneous particles and then compressed into a required form.
• the obtained cake-like foundation was actually applied to a human skin to find that yellowish color was observed at angular positions near the regular reflection angle and dark red tint at other positions.
• this cake-like foundation was actually applied to a face to find that the nose looked shapely and a cubic sense of the entire face was emphasized.
• Eye-shadow containing the following components was prepared by using the composite powder obtained in the embodiment 4.
• Composite powder 45.0 (2) Serisite 30.0 (3) Talc 14.4 (4) Titanium oxide 1.0 (5) Magnesium stearate 3.0 (6) Fluidized paraffin 4.0 (7) 2-ethyl cetylhexanate 2.5 (8) Antiseptics 0.1
• a mixture of components (1) to (5) was prepared. Then the components (6) to (8) were homogeneously mixed with each other, and the resultant mixture was homogeneously mixed with the mixture of components (1) to (5). The resultant mixture was pulverized to obtain particles with a homogeneous diameter, which were compressed to a desired form.
• the obtained eye-shadow was actually applied to a human skin to find that green tint was observed at angular positions near the regular reflection angle and bluish color was observed at other positions.
• the eye-shadow was actually applied to eyelid to find that the color tone changed from green to blue according to a viewing angle to the face.
• Paint containing the following components was prepared with the organic and inorganic composite powder obtained in Embodiment 6.
• Organic/inorganic composite powder 5.0
• Clear lacquer (produced by Endo Kagaku Kogyosho) 95.0
• the components (1) and (2) were mixed with each other, and the inorganic and organic composite powder was homogeneously dispersed with a disperser based on the ultrasonic transmission system. This paint was spread over a white plate and fully dried, and the appearance was observed to find that the color tone changed from red to yellow according to a viewing angle.
• the filtrate was washed and dried for 15 hours under the temperature of 100° C, and further sintered for 3 hours under 750° C, and pulverized.
• the difference (h MAX - h MIN ) and the ratio L* MAX /L* MIN of the obtained titanium oxide containing iron oxide were measure, and the result is shown in Table 1 and Table 2. The result shows that the hue changes little.
• a mixed aqueous solution of 110 g titanil sulfate aqueous solution corresponding to 10 weight percent TiO 2 and 110 g ferric chloride aqueous solution corresponding to 10 weight percent Fe 2 O 3 was added at the rate of 20 g/hour maintaining the pH at 4.0 with 5% sodium hydroxide.
• the suspension was left as it was for one hour, cooled to the room temperature, and filtered. When the filtrate was washed and dried for 15 hours under the temperature of 100°C, and further sintered for 3 hours under 750°C and pulverized.
• This powder had strong metallic luster, and when spread on a black paper piece, shows golden color at positions near the regular reflection angle and redish color at other angular positions.
• the color tone changes at angular positions near the regular reflection angle and other angular positions because of strong regular reflection on the mirror surface reflectivity, but the appearance was unnatural due to the strong metallic luster and its opacity.
• the difference (h MAX - h MIN ) and the ratio L* MAX /L* MIN were measured like in the embodiment 1, and the result is shown in Table 1 and Table 2.

Landscapes

• Life Sciences & Earth Sciences (AREA)
• Health & Medical Sciences (AREA)
• Public Health (AREA)
• Veterinary Medicine (AREA)
• Chemical & Material Sciences (AREA)
• General Health & Medical Sciences (AREA)
• Animal Behavior & Ethology (AREA)
• Organic Chemistry (AREA)
• Epidemiology (AREA)
• Birds (AREA)
• Engineering & Computer Science (AREA)
• Materials Engineering (AREA)
• Wood Science & Technology (AREA)
• Cosmetics (AREA)
• Pigments, Carbon Blacks, Or Wood Stains (AREA)
• Paints Or Removers (AREA)

Priority Applications (3)

Applications Claiming Priority (3)

Publications (1)

Family

ID=27617075

Family Applications (1)

Country Status (3)

Families Citing this family (15)

Citations (9)

Family Cites Families (10)

• 1999
  • 1999-03-29 JP JP08501299A patent/JP3686775B2/ja not_active Expired - Lifetime
• 2000
  • 2000-09-28 EP EP00120297A patent/EP1193297A1/fr not_active Withdrawn
  • 2000-09-29 US US09/672,507 patent/US6562323B1/en not_active Expired - Lifetime

Patent Citations (9)

Also Published As

Similar Documents

Legal Events